A large flat metal surface has a uniform charge density `+sigma`. An electron of mass `m` and charge `u` and returns to it at point `B`. Disregard gravity . The maximum value of `AB` isA. `(u^(2)m epsilon_(0))/(sigma e)`B. `(u^(2)e epsilon_(0))/(m sigma)`C. `(u^(2)e)/(epsilon_(0)sigmam)`D. `(u^(2) sigma e)/(epsilon_(0)m)`

A large flat metal surface has a uniform charge density `+sigma`. An e

1.	A large flat metal surface has a uniform charge density `+sigma`. An electron of mass `m` and charge `u` and returns to it at point `B`. Disregard gravity . The maximum value of `AB` isA. `(u^(2)m epsilon_(0))/(sigma e)`B. `(u^(2)e epsilon_(0))/(m sigma)`C. `(u^(2)e)/(epsilon_(0)sigmam)`D. `(u^(2) sigma e)/(epsilon_(0)m)`
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